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| Mirrors > Home > MPE Home > Th. List > wa | Structured version Visualization version GIF version | ||
| Description: Extend wff definition to include conjunction ("and"). |
| Ref | Expression |
|---|---|
| wph | wff 𝜑 |
| wps | wff 𝜓 |
| Ref | Expression |
|---|---|
| wa | wff (𝜑 ∧ 𝜓) |
| Colors of variables: wff setvar class |
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